first commit

packages/@n8n/nodes-langchain/nodes/llms/LmChatAwsBedrock/LmChatAwsBedrock.node.ts

@@ -0,0 +1,276 @@
+import type { BedrockRuntimeClientConfig } from '@aws-sdk/client-bedrock-runtime';
+import { BedrockRuntimeClient } from '@aws-sdk/client-bedrock-runtime';
+import { ChatBedrockConverse } from '@langchain/aws';
+import {
+	getNodeProxyAgent,
+	makeN8nLlmFailedAttemptHandler,
+	N8nLlmTracing,
+	getConnectionHintNoticeField,
+} from '@n8n/ai-utilities';
+import { NodeHttpHandler } from '@smithy/node-http-handler';
+
+import {
+	NodeConnectionTypes,
+	type INodeType,
+	type INodeTypeDescription,
+	type ISupplyDataFunctions,
+	type SupplyData,
+} from 'n8n-workflow';
+
+export class LmChatAwsBedrock implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'AWS Bedrock Chat Model',
+
+		name: 'lmChatAwsBedrock',
+		icon: 'file:bedrock.svg',
+		group: ['transform'],
+		version: [1, 1.1],
+		description: 'Language Model AWS Bedrock',
+		defaults: {
+			name: 'AWS Bedrock Chat Model',
+		},
+		codex: {
+			categories: ['AI'],
+			subcategories: {
+				AI: ['Language Models', 'Root Nodes'],
+				'Language Models': ['Chat Models (Recommended)'],
+			},
+			resources: {
+				primaryDocumentation: [
+					{
+						url: 'https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.lmchatawsbedrock/',
+					},
+				],
+			},
+		},
+
+		inputs: [],
+
+		outputs: [NodeConnectionTypes.AiLanguageModel],
+		outputNames: ['Model'],
+		credentials: [
+			{
+				name: 'aws',
+				required: true,
+			},
+		],
+		requestDefaults: {
+			ignoreHttpStatusErrors: true,
+			baseURL: '=https://bedrock.{{$credentials?.region ?? "eu-central-1"}}.amazonaws.com',
+		},
+		properties: [
+			getConnectionHintNoticeField([NodeConnectionTypes.AiChain, NodeConnectionTypes.AiChain]),
+			{
+				displayName: 'Model Source',
+				name: 'modelSource',
+				type: 'options',
+				displayOptions: {
+					show: {
+						'@version': [{ _cnd: { gte: 1.1 } }],
+					},
+				},
+				options: [
+					{
+						name: 'On-Demand Models',
+						value: 'onDemand',
+						description: 'Standard foundation models with on-demand pricing',
+					},
+					{
+						name: 'Inference Profiles',
+						value: 'inferenceProfile',
+						description:
+							'Cross-region inference profiles (required for models like Claude Sonnet 4 and others)',
+					},
+				],
+				default: 'onDemand',
+				description: 'Choose between on-demand foundation models or inference profiles',
+			},
+			{
+				displayName: 'Model',
+				name: 'model',
+				type: 'options',
+				allowArbitraryValues: true, // Hide issues when model name is specified in the expression and does not match any of the options
+				description:
+					'The model which will generate the completion. <a href="https://docs.aws.amazon.com/bedrock/latest/userguide/foundation-models.html">Learn more</a>.',
+				displayOptions: {
+					hide: {
+						modelSource: ['inferenceProfile'],
+					},
+				},
+				typeOptions: {
+					loadOptionsDependsOn: ['modelSource'],
+					loadOptions: {
+						routing: {
+							request: {
+								method: 'GET',
+								url: '/foundation-models?&byOutputModality=TEXT&byInferenceType=ON_DEMAND',
+							},
+							output: {
+								postReceive: [
+									{
+										type: 'rootProperty',
+										properties: {
+											property: 'modelSummaries',
+										},
+									},
+									{
+										type: 'setKeyValue',
+										properties: {
+											name: '={{$responseItem.modelName}}',
+											description: '={{$responseItem.modelArn}}',
+											value: '={{$responseItem.modelId}}',
+										},
+									},
+									{
+										type: 'sort',
+										properties: {
+											key: 'name',
+										},
+									},
+								],
+							},
+						},
+					},
+				},
+				routing: {
+					send: {
+						type: 'body',
+						property: 'model',
+					},
+				},
+				default: '',
+			},
+			{
+				displayName: 'Model',
+				name: 'model',
+				type: 'options',
+				allowArbitraryValues: true,
+				description:
+					'The inference profile which will generate the completion. <a href="https://docs.aws.amazon.com/bedrock/latest/userguide/inference-profiles-use.html">Learn more</a>.',
+				displayOptions: {
+					show: {
+						modelSource: ['inferenceProfile'],
+					},
+				},
+				typeOptions: {
+					loadOptionsDependsOn: ['modelSource'],
+					loadOptions: {
+						routing: {
+							request: {
+								method: 'GET',
+								url: '/inference-profiles?maxResults=1000',
+							},
+							output: {
+								postReceive: [
+									{
+										type: 'rootProperty',
+										properties: {
+											property: 'inferenceProfileSummaries',
+										},
+									},
+									{
+										type: 'setKeyValue',
+										properties: {
+											name: '={{$responseItem.inferenceProfileName}}',
+											description:
+												'={{$responseItem.description || $responseItem.inferenceProfileArn}}',
+											value: '={{$responseItem.inferenceProfileId}}',
+										},
+									},
+									{
+										type: 'sort',
+										properties: {
+											key: 'name',
+										},
+									},
+								],
+							},
+						},
+					},
+				},
+				routing: {
+					send: {
+						type: 'body',
+						property: 'model',
+					},
+				},
+				default: '',
+			},
+			{
+				displayName: 'Options',
+				name: 'options',
+				placeholder: 'Add Option',
+				description: 'Additional options to add',
+				type: 'collection',
+				default: {},
+				options: [
+					{
+						displayName: 'Maximum Number of Tokens',
+						name: 'maxTokensToSample',
+						default: 2000,
+						description: 'The maximum number of tokens to generate in the completion',
+						type: 'number',
+					},
+					{
+						displayName: 'Sampling Temperature',
+						name: 'temperature',
+						default: 0.7,
+						typeOptions: { maxValue: 1, minValue: 0, numberPrecision: 1 },
+						description:
+							'Controls randomness: Lowering results in less random completions. As the temperature approaches zero, the model will become deterministic and repetitive.',
+						type: 'number',
+					},
+				],
+			},
+		],
+	};
+
+	async supplyData(this: ISupplyDataFunctions, itemIndex: number): Promise<SupplyData> {
+		const credentials = await this.getCredentials<{
+			region: string;
+			secretAccessKey: string;
+			accessKeyId: string;
+			sessionToken: string;
+		}>('aws');
+		const modelName = this.getNodeParameter('model', itemIndex) as string;
+		const options = this.getNodeParameter('options', itemIndex, {}) as {
+			temperature: number;
+			maxTokensToSample: number;
+		};
+
+		// We set-up client manually to pass httpAgent and httpsAgent
+		const proxyAgent = getNodeProxyAgent();
+		const clientConfig: BedrockRuntimeClientConfig = {
+			region: credentials.region,
+			credentials: {
+				secretAccessKey: credentials.secretAccessKey,
+				accessKeyId: credentials.accessKeyId,
+				...(credentials.sessionToken && { sessionToken: credentials.sessionToken }),
+			},
+		};
+
+		if (proxyAgent) {
+			clientConfig.requestHandler = new NodeHttpHandler({
+				httpAgent: proxyAgent,
+				httpsAgent: proxyAgent,
+			});
+		}
+
+		// Pass the pre-configured client to avoid credential resolution proxy issues
+		const client = new BedrockRuntimeClient(clientConfig);
+
+		const model = new ChatBedrockConverse({
+			client,
+			model: modelName,
+			region: credentials.region,
+			temperature: options.temperature,
+			maxTokens: options.maxTokensToSample,
+			callbacks: [new N8nLlmTracing(this)],
+			onFailedAttempt: makeN8nLlmFailedAttemptHandler(this),
+		});
+
+		return {
+			response: model,
+		};
+	}
+}

packages/@n8n/nodes-langchain/nodes/llms/LmChatAwsBedrock/bedrock.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24"><defs><linearGradient id="a" x1="0%" x2="100%" y1="100%" y2="0%"><stop offset="0%" stop-color="#055F4E"/><stop offset="100%" stop-color="#56C0A7"/></linearGradient></defs><g fill="none" fill-rule="evenodd"><path fill="url(#a)" d="M0 0h24v24H0z"/><path fill="#FFF" d="m12 18.14-2.426.809-.946-.631 1.03-.344-.316-.948-1.768.589L7 17.233V14.5a.5.5 0 0 0-.276-.447L5 13.19v-2.382l1.5-.75 1.5.75v1.69c0 .19.107.364.276.449l2 1 .448-.895L9 12.19v-1.382l1.724-.861A.5.5 0 0 0 11 9.5V8h-1v1.19l-1.5.75L7 9.19V6.769L8 6.1V8h1V5.435l.574-.383L12 5.86zM17.5 17a.5.5 0 1 1-.002 1 .5.5 0 0 1 .002-1m-1-11a.5.5 0 1 1-.002 1 .5.5 0 0 1 .002-1m2 6a.5.5 0 1 1-.002 1 .5.5 0 0 1 .002-1m-1.408 1c.207.58.757 1 1.408 1a1.501 1.501 0 0 0 0-3c-.651 0-1.201.42-1.408 1H13v-2h3.5a.5.5 0 0 0 .5-.5V7.908c.581-.207 1-.757 1-1.408 0-.827-.673-1.5-1.5-1.5S15 5.673 15 6.5c0 .65.419 1.2 1 1.408V9h-3V5.5a.5.5 0 0 0-.342-.474l-3-1a.5.5 0 0 0-.435.058l-3 2A.5.5 0 0 0 6 6.5v2.69l-1.724.863A.5.5 0 0 0 4 10.5v3c0 .19.107.363.276.448l1.724.86V17.5a.5.5 0 0 0 .223.416l3 2a.5.5 0 0 0 .435.058l3-1A.5.5 0 0 0 13 18.5V16h2.293l.853.854.013-.013c-.098.2-.159.422-.159.659 0 .827.673 1.5 1.5 1.5s1.5-.673 1.5-1.5-.673-1.5-1.5-1.5c-.238 0-.46.06-.659.16l.013-.013-1-1A.5.5 0 0 0 15.5 15H13v-2z"/></g></svg>